Question

A glass is full of water at $4^{\circ}\,C$, when it is (a) cooled (b) heated then, which one of the following is correct

• A. water level decreases, increases
• B. water leve decreases, decreases
• C. water level decreases, decreases
• D. Water over flow in both cases

Answer 1

Answer: (D)

Water over flow in both cases

Answer 2

When heated above $4^{0} C$, volume will increase, hence it will overflow. When cooled below $4^{0} C$, it also expands and volume increases( anomalous expansion) until $0^{0} C$. Hence, in both cases it will overflow.